Gr9 Ti3Al2.5V Titanium Tube Pipe GR9 is sometimes called half 4-6. The strength of this titanium alloy is 10-50% higher than that of pure titanium, but its formability and weldability are better than GR5. Standards: ASTM B861, ASTM B862, ASTM B338 Titanium Shapes: titanium round tube/pipe, rectangular tube/pipe, square tube/pipe Application Fields: • Bicycle parts • All types of exhaust pipes • Titanium welding head • Transportation pipeline • Chemicals